Sodium 3-(ethyl(3-methyl-4-((4-(phenylazo)phenyl)azo)phenyl)amino)propanesulphonate, 1-Propanesulfonic acid,3-(ethyl(3-methyl-4-(2-(4-(2-phenyldiazenyl)phenyl)diazenyl)phenyl)amino)-,sodium salt (1:1), 1-Propanesulfonic acid,3-(ethyl(3-methyl-4-((4-(phenylazo)phenyl)azo)phenyl)amino)-,sodium salt, sodium 3-(ethyl{3-methyl-4-[(e)-{4-[(e)-phenyldiazenyl]phenyl}diazenyl]phenyl}amino)propane-1-sulfonate, EINECS 253-266-7,